Watch-maker s combination-toolt



(No Model.)

, W. H. LAMB.

WATGH MAKER'S GQMBIN'ATIQN TOOL Patented May 9 Nv PETERS.Phutoiilhugmphe'n Wnlhinghzn. D. Q

j UNITED ST TE PATENT OFFICE, I

WILLIAM lei/LAMB, on SA; FRANCISCO, CALIFORNIA.

WATCl-t-PMAKERS 00 M BINATlON-TOOLK' sPEcIFIcAT-lfihlltforming part ofLetters Patent No. 257,726, dated May 9, 1882.

To all whom it may concern Be it known that I, WILLIAM H. LAMB, of thecity and county of'San Francisco, State of California, have invented alVatch-Makers Combination-Tool; and I do hereby declare the following tobe a full, clear, and exact description thereof. l

My invention relates to a to'olor device for watch-makers use; and itconsists-of a frame havingtwo springarms passing through itlongitudinally and so formed that their sides may ber'nade to approachor separate. These arms serve as a poising-tool for the balance, andalso astruing-calipers. Upon one side of the frameisaplate, pivoted atone end to the frame, and having the opposite-end movable and capable ofbeing fixed so that one side will make an angle with the side of theframe. Between these sides the roller of the staff may be clamped to beremoved. The free end of this pivoted plate is provided with a holdingdevice for the second-hands while they arebeing broached out or fitted,the whole being intended as a handy tool for different classes of work.

Referring to the accompanying drawings for a more complete explanationof my invention, Figuresl and 2 are perspective views of m y tool. Fig.3 is a horizontal section taken through the slots in which the poisingand truingarms pass. Fig. 4 is a top view of the clamps for the rollersand the second-hand;

Ais a frame, which may be made in any suitable or convenient form; butin the present case I have shown it as composed of a base and two endplates. These end plates have slots B C out down a short distance fromthe top to receive the spring-arms D, which pass through them, the slotB being wider than the slot 0, and itmay have a plate, E, between thesides to prevent the open ends of the springs approaching each othermore than is desired. The spring-arms D are formed of a single piece ofthin spring-steel, like a watchspring, or other thin metal. This pieceis bent to form a bight at a, and the sides extend forward a shortdistance parallel, when they widen out by gradual inclines at b, wherethey pass through theslot 0. Beyond this slot the sides of the springsagain become parallel, and continue thus until near the slot B, whenthey Application filed October 8, 1881. (No model.)

again widen by gradual inclines d, similar to those at b, and passthrough the slots B, after which the sides again become parallel untilthe ends are reached. The relative positions of the inclines b and d tothe slots B and O are such that both will simultaneously enter or leavethe slots, and their action will be to move the from each other. Thisenables me to adjust the sides to receive the pivots of any wheel whichI desire to poise. As the wheel turns freely upon the thin edges of thespring-arms D, the heavier side will settle to the bottom, and it may betaken off until the wholeis perfectly poised.

at e to receive theends of the pivots of any wheel which may be out oftrue, and the arms D may be made to approach or recede, as be foredescribed, until the pivots are held in the sockets so that the wheelmay turn freely.

A jointed arm, F, is pivoted or hinged to one sideof the frame A so thatits point may be brought close to the side of the rim of the wheel orbalance as it revolves, and the point at which it is out of true willthus be easily discovered, so that the wheel or balance can be properlytrued up.

A plate, G, lies upon one side of the frame A, and is pivoted to it atone end, I, while the opposiicend is free to m ovc back and forwardaround its pivot.

A bar, H, is fixed to the frame at one side of the plate G, so that whenturned upon its pivot-pin theplatemay close toward or against this barand act as a clamp to hold anything which may be placed between the two.The bar and the plate each have small grooves 01 in their meeting edges,one pair of which serve to hold the roller of the balance, so that thestaff may be easily removed when necessary. The other grooves serve tohold the minutehand while being fitted to the post,

' The frame A has a slot, XV, cutin it, so that the wheel may have spaceto lie below the clamp while the roller is held within it.

In order to hold the plate G firmly at any desired point, so as to clampthe article to be held, holes I are bored in the end of the frame A, andsimilar holes are bored in the end of the plateG to receive a pin, J,which will enter the holes parallel sides of the arms nearer to orfarther The ends of the arms D have small sockets which correspond, whenthe article is properly clamped between the holding-jaws. Y

The pin 3 is fixed to a spring-arm,'K, which is slotted at the oppositeend, so as to fit over the pivot of the plate G, and at the same time toallow it to move enough to bring the pin into line witheither of thelines-of holes I..

that the socket of the hand may pass through the perforations, while thehand itself ,lies between the arm L and the spring-arm m. When it hasbeen placed the thumb may be pressed upon the convex portion of theupper spring, 12,.

and this will by forcing it down lengthen =it out, so that the side ofthe hole will bind against the socket of the hand above, while theopposite side of the hole below will'bind against the other side of thesocket, thus holding it firmly while it is being broached out or fitted.

Having thus described my'invention, what Iclaim as new, and desire tosecure by Letters Patent, is

1. The frame, A having the slots '13 and 0 formed in its ends, as shown,in combination with the spring-armsD, havinginclines band d,substantially as and for the purpose herein described.

2. The parallel arms D, having the sockets e e to receive the pivots ofa wheel, and having the converging inclines b and d for adjusting thedistance between the arms, in combination with frame A, having slots 13and O, substantially as herein described;

3. The hinged or pivoted swinging plate Gr, having grooves i, the bar H,having corresponding grooves oppositely arranged to grooves i, ,theframe A, having perforations I, and thespring-bar K, with itslocking-pin J, the whole constructed to act in combination, as setforth.

4. In combination with the frame A, theperforated'arm L,-perforatedspring-arm m, and perforated and arched spring-arm 01, arranged foroperation substantially as described.

5. A tool consisting of the frame A, slotted, and having the arms D,with their inclines and the sockets 0, together with the pivoted clamping-plate G, with its locking-pin, and the perforated arms L "m n,substantially as herein described.

In witness whereof I hereunto set my hand.

' WM. H. LAMB.

Witnesses:

FRANK A. BROOKS, S. H. NoUusE.

